Inhouse product
1. Support AUX, Bluetooth, USB, TF card playback.
2. Hand-held lanyard, convenient for outdoor use.
3. High-definition Nicam, good sound quality.
Brand: ZEALOT
Model: S51
Battery capacity: 1500mAh lithium battery
Bluetooth version: 5.0
Speaker: 5W*2
Transmission distance: about 10m
Frequency response: 100Hz-20KHz
Signal to noise ratio: ≥90dB
Working voltage: 3.7V
Distortion: <1%
Charging voltage: DC5V
Charging port: Micro USB
Talk time: about 3h
Music playback: about 8h
Standby time: ≥30 days
Charging time: about 2.5h
TWS: Turn on both speakers at the same time, then long press the "M" key